CVE-2022-48908

net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()

Description

In the Linux kernel, the following vulnerability has been resolved: net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe() During driver initialization, the pointer of card info, i.e. the variable 'ci' is required. However, the definition of 'com20020pci_id_table' reveals that this field is empty for some devices, which will cause null pointer dereference when initializing these devices. The following log reveals it: [ 3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] [ 3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci] [ 3.975181] Call Trace: [ 3.976208] local_pci_probe+0x13f/0x210 [ 3.977248] pci_device_probe+0x34c/0x6d0 [ 3.977255] ? pci_uevent+0x470/0x470 [ 3.978265] really_probe+0x24c/0x8d0 [ 3.978273] __driver_probe_device+0x1b3/0x280 [ 3.979288] driver_probe_device+0x50/0x370 Fix this by checking whether the 'ci' is a null pointer first.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/8e3bc7c5bbf87e86e9cd652ca2a9166942d86206 patch
https://git.kernel.org/stable/c/b1ee6b9340a38bdb9e5c90f0eac5b22b122c3049 patch
https://git.kernel.org/stable/c/b838add93e1dd98210482dc433768daaf752bdef patch
https://git.kernel.org/stable/c/e50c589678e50f8d574612e473ca60ef45190896 patch
https://git.kernel.org/stable/c/5f394102ee27dbf051a4e283390cd8d1759dacea patch
https://git.kernel.org/stable/c/ea372aab54903310756217d81610901a8e66cb7d patch
https://git.kernel.org/stable/c/ca0bdff4249a644f2ca7a49d410d95b8dacf1f72 patch
https://git.kernel.org/stable/c/bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d patch

Frequently Asked Questions

What is the severity of CVE-2022-48908?
CVE-2022-48908 has been scored as a medium severity vulnerability.
How to fix CVE-2022-48908?
To fix CVE-2022-48908, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-48908 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-48908 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-48908?
CVE-2022-48908 affects Linux Linux, Linux Linux.
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